APA (7. basım) Alıntı

Langley, K. M. (1976). A note on the economics of the international petroleum industry and the economy of the Philippines [microform]. Photoduplication Service, University of the Philippines Library.

Chicago Style (17. basım) Atıf

Langley, Kathleen M. A Note on the Economics of the International Petroleum Industry and the Economy of the Philippines [microform]. Quezon City: Photoduplication Service, University of the Philippines Library, 1976.

MLA (9th ed.) Atıf

Langley, Kathleen M. A Note on the Economics of the International Petroleum Industry and the Economy of the Philippines [microform]. Photoduplication Service, University of the Philippines Library, 1976.